A Recursive Process

Cartalk Puzzler: License Plate

September 3, 2011, 12:00 am

Great puzzler from cartalk:

Deep Tanning
RAY: You’re driving past a high school parking lot on a fine spring afternoon in Our Fair City, watching the kids try to do wheelies with their parents’ station wagons. You happen to notice a car with an interesting license plate. It reads TAN 270. What ma...

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Original on How to Fix Our Math Education article is found here.

Some great responses were mailed in.

Sol Garfunkel and David Mumford are right to observe that the everyday usefulness of our high school math curriculum leaves much to be desired. But since when did practicality become the...

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Mandelbrot

September 1, 2011, 12:00 am

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Password Strength

August 30, 2011, 12:00 am

 

To add to this excellent xkcd comic, the following site also exists : Password Haystacks.

Which is a stronger password?

T@+t0O

or

dudewhatdoesmytattoosay

(Click to find out, I’ll wait).

Pretty sweet indeed. What a difference.

Anyways, the reason I’m linking this stuff is th...

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Hurricane Irene – Logarithmic Spiral?

August 28, 2011, 12:00 am

Does Hurricane Irene fit a logarithmic spiral?

I made a Geogebra applet to see if it does. Enjoy.

Parametric equation:
x=b*cos(t)*e^{at}
y=b*sin(t)*e^{at}
-11.7\le t \le 3.4

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Transport $12 billion of gold #anyqs

August 24, 2011, 12:00 am

From Bloomberg:

Venezuelan President Hugo Chavez ordered the central bank to repatriate $11 billion of gold reserves held in developed nations’ institutions such as the Bank of England as prices for the metal rise to a record.

Venezuela, which holds 211 tons of its 365 tons of gold res...

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Python Challenge

August 24, 2011, 12:00 am

 

Python Challenge is a “programming riddle” on the internet.

What is the Python Challenge?
The Python Challenge is a set of riddles that require a little bit of Python programming to be solved. The solutions are entered by changing the address of the page (URL). You get used to the idea pre...

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Changes to Intro to Computer Programming

August 23, 2011, 12:00 am

This will be my third year teaching Introduction to Computer Programming. The first year I had 15 students which was a good showing, but last year I only had 5 students. It turned out to be a scheduling issue, but I was still worried about the health of the course, and whether or not it would contin...

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Why Hello…

August 20, 2011, 12:00 am

I’m updating the hosting of the blog (among other things), so please stay tuned. Cheers. Dan.

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Ants: Any questions?

August 6, 2011, 12:00 am